PROBLEM |
| POSSIBLE CAUSE(S) |
| CORRECTIVE ACTION |
HIGH OPERATION COSTS | 1. | Thermostat set too high | 1. | Set temperature dial to lower setting |
| 2. | Sediment or lime in tank | 2. | |
| 3. | Water heater too small for job | 3. | Install adequate heater |
| 4. | Wrong piping connections | 4. | Correct |
| 5. | Leaking faucets | 5. | Repair faucets |
| 6. | Gas leaks | 6. | Check with |
| 7. | Wasted hot water | 7. | Advise customer |
| 8. | Long runs of exposed piping | 8. | Insulate piping |
| 9. | Hot water piping in exposed wall | 9. | Insulate piping |
INSUFFICIENT HOT WATER | 1. | Thermostat set too low | 1. | Turn temperature dial to desired setting |
| 2. | Sediment or lime in tank | 2. | |
| 3. | Water heater too small | 3. | Install adequate heater |
| 4. | Wrong piping connections | 4. | Correct |
| 5. | Leaking faucets | 5 | Repair faucets |
| 6. | Wasted hot water | 6. | Advise customer |
| 7. | Long runs of exposed piping | 7. | Insulate piping |
| 8. | Hot water piping in outside wall | 8. | Insulate piping |
| 9. | Low gas pressure | 9. | Check with gas utility company |
SLOW HOT WATER | 1. | Insufficient secondary air | 1. | Provide ventilation to water heater. Check flue |
RECOVERY | 2. | Flue clogged | 2. | way, flue baffle, and burner |
| Clean flue, locate source and correct | |||
| 3. | Low gas pressure | 3. | Check with gas utility company |
| 4. | Improper calibration | 4. | Replace thermostat |
| 5. | Thermostat set too low | 5. | Turn temperature dial to desired setting |
| 6. | Water heater too small | 6. | Install adequate heater |
| 7. | Wrong piping connections | 7. | Correct |
| 8. | Wasted hot water | 8. | Advise customer |
DRIP FROM RELIEF VALVE | 1. | Excessive water pressure | 1. | Use a pressure reducing valve and relief valve |
| 2. | Heater stacking | 2. | Lower the thermostat setting |
| 3. | Closed water system | 3. | See “Closed System/Thermal Expansion” |
THERMOSTAT FAILS TO | 1. | Thermostat not functioning properly | 1. | Replace thermostat |
2. | Improper calibration | 2. | Replace thermostat | |
COMBUSTION ODORS | 1. | Insufficient secondary air | 1. | Provide ventilation to water heater. Check flue |
| 2. | Flue clogged | 2. | way, flue baffle, and burner |
| Clean, locate source and correct | |||
| 3. | Heater installed in a confined area | 3. | Provide fresh air ventilation |
SMOKING AND CARBON | 1. | Insufficient secondary air | 1. | Provide ventilation to water heater. Check flue |
FORMATION (SOOTING) | 2. | Low gas pressure | 2. | way, flue baffle, burner |
| Check with gas utility company | |||
| 3. | Flue clogged | 3. | Clean, locate source and correct |
| 4. | Thermostat not functioning properly | 4. | Replace thermostat |
| 5. | Heater installed in a confined area | 5. | Provide fresh air ventilation |
| 6. | Burner flame | 6. | See “Burner Flame |
CONDENSATION | 1. | Temperature setting too low | 1. | Increase the temperature setting |
BURNER FLAME FLOATS | 1. | Orifice too large | 1. | Replace with correct orifice |
AND LIFTS OFF PORTS | 2. | High gas pressure | 2. | Check with gas utility company |
| 3. | Flue clogged | 3. | Clean flue and |
| 4. | Cold drafts | 4. | Locate source and correct |
BURNER FLAME TOO HIGH | 1. | Orifice too large | 1. | Replace with correct orifice |
FLAME BURNS AT ORIFICE | 1. | Thermostat not functioning properly | 1. | Replace thermostat |
| 2. | Low gas pressure | 2. | Check with gas utility company |
PILOT FLAME | 1. | Pilot line or orifice clogged | 1. | Clean, locate source and correct |
TOO SMALL | 2. | Low gas pressure | 2. | Check with gas utility company |
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